Symantec Endpoint Protection Upgrade 14.2 To 14.3

Upgrading from Symantec Endpoint Protection (SEP) 14.2 to 14.3 is a significant transition that introduces enhanced security features, including improved behavioral protection and Antimalware Scan Interface (AMSI) integration 🛡️ Pre-Upgrade Requirements

: If you have multiple SEPM sites, cancel replication before starting the upgrade. symantec endpoint protection upgrade 14.2 to 14.3

Execute the 14.3 setup file as an administrator. The Management Server Configuration Wizard will automatically update the database schema. 2. Upgrade the Clients Upgrading from Symantec Endpoint Protection (SEP) 14

Step 4 — Post-SEPM-upgrade checks

| Issue | Likelihood | Mitigation | |-------|------------|-------------| | Database upgrade fails (SQL compatibility) | Medium | Ensure SQL is at least 2016, run DBCC CHECKDB pre-upgrade. | | Client communication breaks after SEPM upgrade | Low | Restart Symantec Management Service; check firewall port 8014. | | Custom policies lost or reset | Low | Export all policies before upgrade as XML backup. | | High memory usage post-upgrade (Java console) | Medium | Increase SEPM heap size (set SEPM_JVM_MAX_MEMORY ). | | 14.3 client fails on Windows 7 / old OS | High | – keep 14.2 client or retire the OS. | | | Custom policies lost or reset |

Maintenance after upgrade